The MOTU 24 I/O EXPANSION interface is aimed at users of an existing PCI or PCIe-424 based MOTU audio system (2408mk3, 24 I/O Core, HD192 etc.). It provides 24 high quality, 24-bit/96kHz analog inputs and outputs in a cost effective, single rack space package, allowing you to connect and record from 24 simultaneous analog sources. The MOTU 24 I/O EXPANSION interface front panel is essentially a dedicated meter bridge. Audio activity for every input and output is represented by a dedicated five-segment LED bar graph. The 24 analog inputs and outputs are 1/4 inch jack TRS connectors operating at either -10dB or +4dB (balanced/unbalanced,) and the input level can be switched via software in banks of eight inputs. The 24I/O interface provides word clock sync on a single BNC connector that can be programmed for input or output via software. The MOTU 24 I/O CORE - PCI EXPRESS system uses second generation AudioWire protocol, a high-bandwidth digital audio format capable of carrying up to 24 channels of 96kHz digital audio in and out of the computer at the same time. Up to four audio interfaces (which are hot swappable) can be connected to a PCI or PCIe-424 in any combination.MOTU 24 I/O Expansion Features: